Perhaps you should try some spelling variations:
"pham thi code snippets" » "pham thi cong snippets", "pham thi hoe snippets", "phan thi code snippets", "pham thi code slippers"
"nnhang java java snippets" » "nnhang java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("pham thi code snippets") or ("nnhang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham thi code snippets") OR ("nnhang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham thi code snippets ) or ( nnhang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham thi code snippets") or ("nnhang java java snippets"))) or ("locating bug code snippets"))*.